Automatic gas-release packer



W. J. CUMMINGS. AUTOMATIC GAS RELEASE PACKER.

APPLICATION FILED FEB, ZOI I922.

Patented Apr. 11, 1922.

@Iwuewtoi WILLIAM (LI-CUMMINGS v ,(9 Q, 4 z

NITED STATES PATENT OFFICE.

WILLIAM J. CUMMINGS, 0F BRECKENRIDGE, TEXAS.

AUTOMATIC GAS-RELEASE PACKER.

Specification of Letters lie/cent. I Patfited Apr, 11, 1922,

Application filed February 29, 1922. Serial No. 537,823.

To all whom it may concern:

Be it known that I, WILLIAM MINGS, a citizen of the United States,resid-v ing at Breckenridge, in the county of Stephens and State ofTexas, have invented certain new and 'useful Improvements in AutomaticGas-Release Packers, of which the followin is a specification.

My invention relates to gas release packers and valves therefor; and theobject is to provide releasing devices by which a.

constant pressure can be exerted on the upward flowing liquid byreleasing a part of the pressure below .the packer and the amount ofpressure to be released can be regulated by spring-controlled valves.The object is to prevent too much pressure on the gas or oil producingsands and to'provide simple means for controlling and regulating theupward flow of liquid and gas and to prevent too free passage of thegas,

- so that the gas can be efliciently utilized for lifting the oil out ofthe wells. Other ob-' jects and advantages will be fully explained inthe following description and the invention-will be more'particularlypointed out in the claims.

Reference is had to the accompanying drawings which form a part of thisapplication.

Fig. 1 is a sideelevation of a release packer. Fig. 2 is an enlargedvertical section, the valves beingomitted. Fig. 3 is an enlargedvertical section of one of the valve casings. Fig. dis a plan view ofthe valve.

Similar characters of reference are used to indicate the same partsthroughout the several views.

The packer includes a block 1, preferably of cylindrical rubber whichhas a central opening for the passage of an oil or other liquiddischarge pipe 2. Compression rings 3 and 4 are mounted on the upper andlower ends of the packer 1. Means are provided for expanding thepacker-against the easing wall 5. A cone-shaped coupling 6 receiyes theupper end of the discharge pipe 2 and this pipe is supported in thecoupling 6 by a collar 7, The coupling 6 has the upper end threadedinterio-rly for coupling to the discharge pipe (not shown) A similarexpanding coupling may be used in the lower end of the packer, asindicated by' dotted outline 8. Pipes 9 are provided for J. CUM-v escapeof gas and these pipes are inserted in'the packer.

Collars 10 hold the pipes 9 in place to prevent these pipes from comingout of the packer. Nuts 11 may be screwed on the lower end of the pipes9 for compressing the rings 3 and 4 on the packer 1 for expanding thepacker against the casin 5. The tapering end of the coupling 6 wil beforced by the weight of the pipes downwardly and the rubber of thepacker 1 will be expanded against the walls of the casing 5, or againstthe wall of the well.

he gas is held below the packer to assist in elevating or ejecting theoil or other liquid. The pipes 9 are provided with valves 12 which areinclosed in casings 13.

the cap 16 to compress the spring 15 more or less so .that the gas willhave topress more or less on the valve 12 to pass out the pipe 9. Theseat in the valve 12 is formed at 18 in the top of the win of the valve.The valve spring 15 may e set to resist five pounds pressure or anypressure required. The object is to prevent too much pressure beingthrown on the gas or oil producing sands and .to provide means by whicha constant ressure can be exerted for discharging oi or other liquid.The gas will pass upwardly through the pipe 2 for aidin in discharginthe oil or other liquid. he concave pac er rings 3 and 41- will hold thepacker securely in place. If

The valve the gas pressure becomes too great below the packer, thevalves 12 will let the gas pass through the pipes 9 until the pressurebelow the packer is released.

What ll claim, is,'- v

1. A gas release packer comprising a cylindrical block of resilientmaterial having an opening vertically therethrough, a dischargepipepassing through said opening, compressor packer rings inclosing the endsof said block, a cone-shaped coupling for expanding said block against aWell casing, and gas release valves and pipes running from said valvesthrough said 'lolock for escape of gas.

2, A gas release packer comprising a loloel: of compressible andresilientinalerial having an opening vertically therethrough, adischarge pipe extending through said opening, a cone-shaped couplingfor expanding said block against the Walls of the Well casing, gasescape pipes projected lzhrough said block, and pressure gauged valvesfor controlling the passage oi gas through said gas escape pipes.

3. A gas release packer comprising a block of compressible and resilientinalerial provided with an opening vertically therethrough for adischarge pipe, means for expanding said bl'oek against the Walls ofWell gas release pipes projected through said block, and spring gaugevalves for said release pipes to control the passage of gaseherethrough,

a. A gas release packer comprising a block of compressible and resilientmaterial provided with an opening vertically there-

